US20150217594A1 - Method for producing magnetically induced patterns in a layer deposited on a glass sheet - Google Patents
Method for producing magnetically induced patterns in a layer deposited on a glass sheet Download PDFInfo
- Publication number
- US20150217594A1 US20150217594A1 US14/413,482 US201314413482A US2015217594A1 US 20150217594 A1 US20150217594 A1 US 20150217594A1 US 201314413482 A US201314413482 A US 201314413482A US 2015217594 A1 US2015217594 A1 US 2015217594A1
- Authority
- US
- United States
- Prior art keywords
- glass sheet
- liquid composition
- layer
- conveyor
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
- B44C5/0407—Ornamental plaques, e.g. decorative panels, decorative veneers containing glass elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F7/00—Designs imitating three-dimensional effects
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
- C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
- C03C17/007—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/44—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the composition of the continuous phase
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/44—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the composition of the continuous phase
- C03C2217/445—Organic continuous phases
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/46—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
- C03C2217/48—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase having a specific function
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
- C03C2217/43—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase
- C03C2217/46—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase
- C03C2217/48—Coatings comprising at least one inhomogeneous layer consisting of a dispersed phase in a continuous phase characterized by the dispersed phase having a specific function
- C03C2217/485—Pigments
Definitions
- the present invention relates to a method for producing patterns that produce an illusion of relief, or a three-dimensional illusion, or else an illusion of thickness, in a layer deposited on a glass sheet.
- the present invention relates to a method for producing magnetically induced patterns in a layer deposited on a glass sheet.
- the method of the invention exhibits in particular applications in the field of decoration as the glass sheets which it makes it possible to manufacture exhibit decorative patterns.
- An objective of the invention is in particular to overcome these disadvantages of the prior art.
- one objective of the invention is to provide a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which may be used for large glass sheet surfaces and that allows good reproducibility of the patterns.
- Another objective of the invention in at least one of its embodiments, is to provide a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which may be carried out in-line.
- one objective of the invention is to provide a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which may be carried out easily and rapidly in an existing painted glass sheet production line and which also makes it possible, once used in said production line, to go back to the initial production line rapidly and easily.
- the invention in at least one of its embodiments, also has the objective of providing a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which is rapid, economical and comprises a minimum number of steps.
- the invention relates to a method for producing magnetically induced patterns in a layer deposited on a glass sheet, said method comprising the following successive steps:
- the invention is based on a novel and inventive approach as it makes it possible to solve the abovementioned disadvantages of the prior art and to resolve the technical problem addressed.
- the inventors have demonstrated that it was possible, owing to a modification of a roller of a conveyor within an existing painted glass sheet production line, to obtain a method for producing one or more magnetically induced patterns in a layer deposited on a glass sheet, which may be applied to large glass surfaces, which is reproducible and which may be carried out readily and easily in-line and with a minimum number of steps (in particular only one layer is needed).
- FIG. 1 schematically presents the steps of the method of the invention
- FIG. 2 schematically illustrates the step of selective exposure to a magnetic field of the glass sheet comprising the layer of liquid composition according to the invention (cross-sectional view);
- FIG. 3 schematically illustrates the step of selective exposure to a magnetic field of the glass sheet comprising the layer of liquid composition according to the invention and traveling on a roller conveyor (top view);
- FIG. 4 schematically presents examples of arrangements of patterns magnetically induced in a layer deposited on a glass sheet that are capable of being obtained by the method of the invention.
- FIG. 5 presents (a) a diagram of the modified roller according to the invention and (b) a cross section through the length of said roller.
- the sheet used in the method according to the invention is made of glass which can belong to various categories.
- the glass can thus be a glass of soda-lime type, a borate glass, a lead glass, a glass comprising one or more additives homogeneously distributed in its body, such as, for example, at least an inorganic colorant, an oxidizing compound, a viscosity regulator and/or an agent which facilitates melting.
- the glass of the invention may be a float glass, a drawn glass or a glass of “cast” type (laminated between rollers). It may be clear, extra-clear or body-tinted.
- the glass sheet may be thermally or chemically tempered. According to a preferred embodiment, the glass sheet is a float glass sheet.
- the glass sheet is a sheet of float glass of soda-lime type.
- the glass sheet may have a thickness that varies between 0.7 and 18 mm.
- the glass sheet may also have dimensions of greater than 1 m ⁇ 1 m. It may, for example, have dimensions of 3.21 m ⁇ 6 m or 3.21 m ⁇ 5.50 m or 3.21 m ⁇ 5.10 m or 3.21 m ⁇ 4.50 m (referred to as “PLF” (jumbo size) glass sheet) or else, for example, 3.21 m ⁇ 2.55 m or 3.21 m ⁇ 2.25 m (referred to as “DLF” (production width size) glass sheet).
- the method of the invention comprises a step (1) of depositing, in the form of the layer, a liquid composition on at least one portion of the face of the glass sheet opposite that resting on the conveyor.
- the liquid composition may be deposited in the form of a layer by any means.
- the liquid composition according to the invention may, for example, be deposited on the glass sheet by curtain coating, roller coating or spray coating.
- the glass sheet, during step (1) may be immobile or else alternatively be moving, i.e. traveling either on a conveyor which will then continue to step (2), or on a belt.
- the liquid composition is deposited by curtain coating, as this deposition technique makes it possible to apply a liquid layer onto a moving flat substrate at high speed (for example 50 meters per minute).
- the glass sheet preferably travels on two belts, the curtain of liquid composition being poured between them.
- the weight of liquid composition (therefore just after step (2) but before the curing step 3) per unit of surface area of the glass sheet is preferably at least 50 g/m 2 .
- the weight of liquid composition per unit of surface area is also preferably at most 180 g/m 2 .
- the weight of liquid composition per unit of surface area is from 80 g/m 2 to 120 g/m 2 .
- the layer of liquid composition is deposited on at least one portion of one of the faces of the glass sheet.
- the layer of liquid composition is deposited on practically the whole of the surface of one of the faces of the glass sheet.
- the expression “practically the whole of the surface” is understood to mean at least 90% of the surface.
- the liquid composition comprises magnetically orientable particles.
- the magnetically orientable particles behave as miniature magnets. When they are placed in a magnetic field, such particles have a tendency to be oriented in the applied field so that their magnetic axis is aligned with the magnetic force lines of the field.
- the magnetically orientable particles may be of the type described in particular in U.S. Pat. No. 3,676,273; U.S. Pat. No. 4,838,648; WO 02/073250; EP 686 675 A1 or WO 2007/131833.
- the magnetically orientable particles according to the invention are based on iron.
- the magnetically orientable particles may be flattened or in the form of flakes.
- the amount of magnetically orientable particles in the liquid composition (before curing) is preferably between 20% and 80% by weight of said liquid composition.
- the liquid composition comprises between 30% and 70% by weight of magnetically orientable particles.
- the liquid composition comprises a liquid medium in which the magnetically orientable particles are in suspension.
- the liquid composition according to the invention may be a paint, a lacquer, a varnish, an enamel or an ink.
- the liquid composition according to the invention comprises at least one component selected from acrylates, acrylics, acrylic resins, polyacrylate resins, urethanes, polyurethanes, polyamide polyols, melamine resins, polycarbonates, polyesters, polyolefins, polyamides, amino resins, epoxy resins, phenolic resins, silicone resins, PVC and PVB.
- the liquid composition according to the invention comprises at least one component selected from acrylates, acrylics, acrylic resins, polyacrylate resins and melamine resins.
- the liquid composition according to the invention comprises at least one component selected from methacrylic resins, melamine-formaldehyde resins and epoxy resins.
- the liquid composition may also advantageously comprise other components such as a curing agent, one or more solvents, a plasticizer, a dispersant, a catalyst, a photoinitiator, an adhesion promoter, a UV stabilizer, non-magnetic pigments, colorants, a flow agent, a wetting agent, an antifoaming agent, etc.
- a curing agent such as one or more solvents, a plasticizer, a dispersant, a catalyst, a photoinitiator, an adhesion promoter, a UV stabilizer, non-magnetic pigments, colorants, a flow agent, a wetting agent, an antifoaming agent, etc.
- the method according to the invention comprises a step (2) of selective exposure of the glass sheet comprising the layer of liquid composition to a magnetic field.
- the glass sheet travels on a horizontal roller conveyor at least during the selective exposure step (2), in a direction perpendicular to the largest dimension of said rollers, the liquid composition being on the face opposite that resting on the conveyor.
- the roller conveyor according to the invention is a conventional roller conveyor, typically used in glass sheet production lines. It generally comprises several rollers positioned parallel to one another in the length and substantially at the same height, spaced apart by a distance that enables the glass sheet to lie at least on two rollers. Each roller may also advantageously conventionally comprise several “O-rings”, i.e. rubber seals over the circumference of the cross section of the roller, avoiding direct contact between the glass and the roller material.
- the rate of travel of the glass sheet on the conveyor preferably varies between 1 and 15 meters per minute. Very preferably, the rate of travel of the glass sheet on the conveyor preferably varies between 2 and 10 meters per minute.
- the selective exposure step (2) is carried out by means of at least one roller of the conveyor, this roller comprising at least one element made of a material having permanent magnetization incorporated into the surface thereof, also referred to as “modified roller” in the remainder of the present text.
- the modified roller is made from a cylindrical body made of non-magnetic material.
- the cylindrical body of the roller is made of non-magnetic steel or of aluminum.
- the elements made of a material having permanent magnetization may be selected from magnets of ferrite or ceramic type, magnets of Alnico (aluminum-nickel-cobalt) type, magnets of samarium-cobalt type or else magnets of neodymium-iron-boron type.
- the expression “element made of a material having permanent magnetization incorporated into the surface of a roller of the conveyor” means that the element made of a material having permanent magnetization is incorporated into the cylindrical body of said roller, the outer surface thereof being located either (i) slightly below the outer surface of the roller, or (ii) substantially at the same level as the outer surface of the roller, being flush therewith without sticking out beyond it or else (iii) in the case where each roller of the conveyor (including the modified roller) comprises several O-rings, slightly below the outer surface of said O-rings or at the same level, without sticking out beyond it.
- the magnets may be positioned in the cylindrical body of the modified roller owing to small cavities present in this cylindrical body.
- the “depth” of the magnet in its cavity may be adapted in order to modify the distance between the magnet and the layer deposited on the glass sheet, which makes it possible to slightly modify the optical rendering of the magnetically induced pattern when the glass thickness remains constant or else to retain an identical optical rendering when thicker glass sheets are passed over the conveyor.
- the modified conveyor roller may comprise a single permanent magnet.
- the modified conveyor roller comprises several permanent magnets.
- the permanent magnets may be identical, in terms of shape, size and strength.
- the permanent magnets may be different, in terms of shape, size and/or strength.
- the shape and size of the permanent magnets according to the invention will respectively determine the shape and size of the pattern induced in the layer by each of these elements and therefore the appearance of the overall pattern.
- the strength of the permanent magnets according to the invention will determine the optical/esthetic rendering of the magnetically induced pattern. A stronger magnet will give a more pronounced pattern, with an impression of more pronounced depth, sometimes also of darker color.
- the permanent magnets may be placed at identical distances from the glass sheet and therefore from the layer or, alternatively, at different distances, by varying the “depth” of the magnets incorporated into the surface of the modified roller.
- the modified roller comprising at least one magnet incorporated into the surface thereof, makes it possible to produce magnetic field lines in the vicinity of the sheet traveling on the conveyor.
- the exposure to the magnetic field lines takes place very efficiently since the glass sheet, and therefore the layer, is exposed to the magnetic field for a sufficient time, even in the case of a high rate of travel of the glass sheet on the conveyor generally required by an in-line process. Indeed, this is illustrated in FIG.
- FIG. 2 cross-sectional view parallel to the direction of travel of the glass sheet
- FIG. 2 shows a glass sheet ( 4 ) covered by a layer of liquid composition ( 5 ) after the deposition step (1) traveling (in the direction indicated by the arrow) on top of a modified roller ( 6 ) according to the invention in which four magnets ( 7 ) have been incorporated in the surface of said roller, placed around its circumference at 90° from one another.
- This figure shows, in (a), the approach movement of one of the magnets of the roller toward the glass sheet, already generating field lines in the vicinity of the sheet, in (b) the position of said magnet facing the glass sheet generating maximum magnetization, and in (c) the receding movement of the magnet, still generating field lines in the vicinity of the sheet.
- the modified roller may comprise one or more “discrete” and/or “continuous” magnets.
- a “discrete” magnet is understood to mean a magnet for which all the dimensions are significantly smaller than the dimensions of the modified roller (length and circumference of its cross section).
- the pattern that it induces is then repeated in the layer regularly in the direction of movement of the sheet, with a spacing that corresponds to the circumference of the cross section of the modified roller.
- the roller comprises more than one permanent magnet aligned in the circumference of a cross section of the roller and evenly spaced out, the pattern induced is then repeated in the direction of movement of the sheet, with a spacing that corresponds to the circumference of the cross section of the modified roller divided by the number of magnets present around this circumference.
- FIG. 3 illustrates the process of step (2) according to the invention.
- the glass sheet ( 8 ) covered by a layer of liquid composition comprising magnetically orientable particles travels, in the direction of the arrows, on a roller conveyor ( 9 ) and approaches a modified roller ( 10 ) according to the invention comprising four permanent magnets (ii) incorporated into the surface thereof and aligned along the length thereof.
- magnetically induced patterns ( 12 ) are created in the layer of liquid composition in the form of lines of four patterns spaced apart by a distance corresponding to the circumference of the cross section of the roller.
- FIGS. 4 ( a ) to ( d ) schematically present examples of arrangements of magnetically induced patterns in a layer deposited on a glass sheet according to the invention owing to discrete magnets incorporated into a roller of the conveyor.
- a “continuous” magnet is understood to mean a magnet that is continuous over one of the dimensions (length and circumference) of the roller, either (i) in the length of the roller, thus creating repetitive lines perpendicular to the movement of the sheet and spaced apart by a distance equal to the circumference of the roller (see FIG. 4 ( e )), or (ii) in the circumference of the cross section of the roller, thus creating a line parallel to the movement of the sheet having a thickness that varies as a function of the thickness of the continuous magnet in the circumference.
- Several continuous magnets, in the length and/or in the circumference (see FIG. 4 ( f )) of the modified roller may be present. If several continuous magnets in the length and in the circumference are present on the modified roller, it is then possible to create a general pattern corresponding to a grid.
- the conveyor may comprise several, identical or different, modified rollers.
- This embodiment is of course compatible, for each roller, with all the embodiments disclosed above that correspond to the modified roller.
- the method according to the invention comprises a step (3) of curing the liquid composition.
- This step makes it possible to change from a wet liquid layer to a hard and dry layer. Hence it makes it possible to set the oriented particles and therefore to fix the patterns created in the layer by the selective magnetization step.
- the curing step according to the invention may be carried out by drying the composition (for example, evaporation of solvents) and/or by crosslinking.
- Crosslinking is understood to mean a step that involves chemical polymerization reactions and the formation of a three-dimensional polymer network. Curing by crosslinking according to this embodiment may be obtained by heating (typically at temperatures of the order of 100° C.
- the liquid composition advantageously comprises a curing agent/catalyst.
- the thickness of the layer according to the invention, once cured in step 3, is at least 5 microns and at most 150 microns.
- the thickness of the layer according to the invention, once cured in step 3, is at least 20 microns and at most 120 microns.
- the method of the invention comprises an additional step of treating the glass sheet with an adhesion primer before the deposition ( 1 ) of the layer of liquid composition.
- This adhesion primer may be deposited by any manner known in the art.
- the adhesion primer enables a better adhesion of the layer, once cured, to the glass.
- Silane is a compound commonly used for such a treatment.
- the layer according to the invention is in direct contact with the glass, that is to say that no other layer is present between the glass and the layer comprising the magnetically orientable particles.
- Treatment with a silane-type adhesion primer does not constitute another layer within the meaning of the present embodiment. Therefore, this embodiment is not incompatible with a silane treatment.
- the method of the invention comprises an additional step of cleaning the glass sheet, before the deposition of the layer of liquid composition, and at least the face intended to receive the liquid composition.
- This cleaning may be carried out, for example, with water or an aqueous solution containing a detergent.
- the method of the invention comprises an additional step of polishing the glass sheet with the aid of a polishing agent, before the deposition (i) of the layer of liquid composition, and at least on the face intended to receive the liquid composition.
- a polishing agent that may be used is a powder comprising cerium oxide, CeO 2 .
- the method of the invention comprises an additional step, after the curing step (3), which corresponds to the deposition of at least one additional layer, then covering the cured layer.
- It may be, for example, a layer of mechanical protection, an antireflection layer, a layer for preventing finger marks, etc.
- a 3.21 m ⁇ 2.25 m (DLF, or production width size) sheet of clear glass having a thickness of 4 mm was placed on a roller conveyor. Along its journey on the conveyor, it first underwent polishing with a powder comprising cerium oxide in order to clean its surface. It then underwent a silane treatment.
- the liquid composition applied is a paint of light gray color comprising a Glassorex clearcoat (from the company Fenzi) based on resins of the methacrylic melamine-formaldehyde and epoxy type, and comprising 50% by weight of FERRICON® 160 pigments from the company Eckart.
- the amount of liquid composition applied to the glass sheet is 100 g/m 2 .
- the roller made of aluminum, was modified by incorporation in the surface thereof (the outer surface of the magnets coming to slightly below the surface of the roller) of 216 magnets, distributed along its length ( 54 magnets equidistant by 5 cm over one row) and along its circumference (each time 4 magnets, at 90° from one another).
- the modified roller used is depicted in FIG. 5( a ) and a cross section of this roller along the length is shown schematically in FIG. 5( b ).
- Each of the magnets ( 13 ) is a neodymium-iron-boron magnet (Supermagnete S-05-25-N), of cylindrical shape, the circular cross section of which has a diameter of 5 mm and the length of which is 25 mm.
- Each magnet was positioned in the roller, in cavities ( 14 ), so that its length is perpendicular to the length of the roller and so that one of its circular ends is positioned toward the outside of the surface of the roller, slightly above this surface but below the outer surface of the O-rings ( 15 ) used.
- the glass sheet was thus selectively exposed to a field creating, in the liquid composition, patterns of three-dimensional appearance, of darker color, that are repetitive and of circular shape.
Abstract
The invention relates to a method for producing magnetically induced patterns in a layer deposited on a glass sheet, said method comprising the following steps in succession, as said glass sheet runs over a horizontal roller conveyor in a direction perpendicular to the largest dimension of the rollers of said roller conveyor: (i) depositing, in the form of a layer, a liquid composition on that face of the glass sheet which is opposite the face resting on the conveyor, the composition comprising magnetically orientable particles; (ii) selectively exposing the glass sheet comprising the layer of liquid composition to a magnetic field; and (iii) hardening the liquid composition. According to the invention, the step of selective exposure to a magnetic field is carried out by means of at least one roller of the conveyor comprising at least one element made of a permanently magnetic material integrated into its surface, so as to produce magnetic field lines in a region of the sheet running over the conveyor.
Description
- The present invention relates to a method for producing patterns that produce an illusion of relief, or a three-dimensional illusion, or else an illusion of thickness, in a layer deposited on a glass sheet. In particular, the present invention relates to a method for producing magnetically induced patterns in a layer deposited on a glass sheet.
- The method of the invention exhibits in particular applications in the field of decoration as the glass sheets which it makes it possible to manufacture exhibit decorative patterns.
- Several methods for manufacturing rigid or flexible flat substrates or sheets comprising magnetically induced patterns are already known. Most of these methods use the following successive main steps:
-
- depositing a liquid composition, comprising magnetizable or magnetically orientable particles, in the form of a layer on the substrate;
- selective magnetization of said particles while the composition is still fluid and while the particles are therefore still mobile within this layer, bringing about their orientation along the lines of the magnetic field applied and the creation of patterns; and
- drying, curing and/or crosslinking of the composition in order to set the particles and therefore fix the patterns created in the layer.
- In the methods already described, the method of magnetization/magnetic induction varies. In U.S. Pat. No. 3,676,273, patterns are created in a layer (of acrylic paint for example) comprising magnetizable pigments that is deposited on a substrate (an aluminum panel for example), by interposing, between the magnets (that generate the magnetic field) and the covered substrate, a steel sheet in which said patterns are cut out. However, this technique, which uses the mask principle to selectively apply the magnetic field, has many disadvantages. In particular, the existence of this steel mask does not allow the use of this process for large substrate surfaces and also does not allow the in-line integration thereof (in a production line for example) or a good reproducibility of the patterns. In patent BE 774930, the magnetic induction is obtained owing to a “primer” layer containing particles having permanent magnetization, which layer is dried and magnetized according to the desired pattern. If a liquid layer containing magnetizable particles is deposited on this primer layer, the pattern then appears. However, this technique requires more steps and in particular the deposition and drying of two separate layers.
- An objective of the invention is in particular to overcome these disadvantages of the prior art.
- In particular, one objective of the invention is to provide a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which may be used for large glass sheet surfaces and that allows good reproducibility of the patterns.
- Another objective of the invention, in at least one of its embodiments, is to provide a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which may be carried out in-line. In particular, one objective of the invention is to provide a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which may be carried out easily and rapidly in an existing painted glass sheet production line and which also makes it possible, once used in said production line, to go back to the initial production line rapidly and easily.
- Finally, the invention, in at least one of its embodiments, also has the objective of providing a method for producing magnetically induced patterns in a layer deposited on a glass sheet, which is rapid, economical and comprises a minimum number of steps.
- In accordance with one particular embodiment, the invention relates to a method for producing magnetically induced patterns in a layer deposited on a glass sheet, said method comprising the following successive steps:
-
- 1) depositing a liquid composition in the form of a layer on at least one portion of one of the faces of the glass sheet, said composition comprising magnetically orientable particles;
- 2) selectively exposing the glass sheet comprising the layer of liquid composition to a magnetic field during which said glass sheet travels on a horizontal roller conveyor, in a direction perpendicular to the largest dimension of said rollers, the liquid composition being on the face opposite that resting on the conveyor; and
-
- 3) curing the liquid composition;
the step 2) of selective exposure to a magnetic field being carried out by means of at least one roller of said conveyor comprising at least one element made of a material having permanent magnetization incorporated into the surface thereof, so as to produce magnetic field lines in the vicinity of the sheet traveling on the conveyor.
- 3) curing the liquid composition;
- Thus, the invention is based on a novel and inventive approach as it makes it possible to solve the abovementioned disadvantages of the prior art and to resolve the technical problem addressed. Specifically, the inventors have demonstrated that it was possible, owing to a modification of a roller of a conveyor within an existing painted glass sheet production line, to obtain a method for producing one or more magnetically induced patterns in a layer deposited on a glass sheet, which may be applied to large glass surfaces, which is reproducible and which may be carried out readily and easily in-line and with a minimum number of steps (in particular only one layer is needed).
- Other characteristics and advantages of the invention will become more clearly apparent on reading the following description of a preferred embodiment, given as simple illustrative and nonlimiting example, and the appended figures, among which:
-
FIG. 1 schematically presents the steps of the method of the invention; -
FIG. 2 schematically illustrates the step of selective exposure to a magnetic field of the glass sheet comprising the layer of liquid composition according to the invention (cross-sectional view); -
FIG. 3 schematically illustrates the step of selective exposure to a magnetic field of the glass sheet comprising the layer of liquid composition according to the invention and traveling on a roller conveyor (top view); -
FIG. 4 schematically presents examples of arrangements of patterns magnetically induced in a layer deposited on a glass sheet that are capable of being obtained by the method of the invention; and -
FIG. 5 presents (a) a diagram of the modified roller according to the invention and (b) a cross section through the length of said roller. - The sheet used in the method according to the invention is made of glass which can belong to various categories. The glass can thus be a glass of soda-lime type, a borate glass, a lead glass, a glass comprising one or more additives homogeneously distributed in its body, such as, for example, at least an inorganic colorant, an oxidizing compound, a viscosity regulator and/or an agent which facilitates melting. The glass of the invention may be a float glass, a drawn glass or a glass of “cast” type (laminated between rollers). It may be clear, extra-clear or body-tinted. The glass sheet may be thermally or chemically tempered. According to a preferred embodiment, the glass sheet is a float glass sheet. Very preferably, the glass sheet is a sheet of float glass of soda-lime type. The glass sheet may have a thickness that varies between 0.7 and 18 mm. The glass sheet may also have dimensions of greater than 1 m×1 m. It may, for example, have dimensions of 3.21 m×6 m or 3.21 m×5.50 m or 3.21 m×5.10 m or 3.21 m×4.50 m (referred to as “PLF” (jumbo size) glass sheet) or else, for example, 3.21 m×2.55 m or 3.21 m×2.25 m (referred to as “DLF” (production width size) glass sheet).
- As illustrated in
FIG. 1 , the method of the invention comprises a step (1) of depositing, in the form of the layer, a liquid composition on at least one portion of the face of the glass sheet opposite that resting on the conveyor. The liquid composition may be deposited in the form of a layer by any means. The liquid composition according to the invention may, for example, be deposited on the glass sheet by curtain coating, roller coating or spray coating. The glass sheet, during step (1), may be immobile or else alternatively be moving, i.e. traveling either on a conveyor which will then continue to step (2), or on a belt. Preferably, the liquid composition is deposited by curtain coating, as this deposition technique makes it possible to apply a liquid layer onto a moving flat substrate at high speed (for example 50 meters per minute). In this case, the glass sheet preferably travels on two belts, the curtain of liquid composition being poured between them. - The weight of liquid composition (therefore just after step (2) but before the curing step 3) per unit of surface area of the glass sheet is preferably at least 50 g/m2. The weight of liquid composition per unit of surface area is also preferably at most 180 g/m2. Very preferably, the weight of liquid composition per unit of surface area is from 80 g/m2 to 120 g/m2.
- According to the invention, the layer of liquid composition is deposited on at least one portion of one of the faces of the glass sheet. Preferably, the layer of liquid composition is deposited on practically the whole of the surface of one of the faces of the glass sheet. The expression “practically the whole of the surface” is understood to mean at least 90% of the surface.
- According to the invention, the liquid composition comprises magnetically orientable particles. The magnetically orientable particles behave as miniature magnets. When they are placed in a magnetic field, such particles have a tendency to be oriented in the applied field so that their magnetic axis is aligned with the magnetic force lines of the field. According to the invention, the magnetically orientable particles may be of the type described in particular in U.S. Pat. No. 3,676,273; U.S. Pat. No. 4,838,648; WO 02/073250; EP 686 675 A1 or WO 2007/131833. Preferably, the magnetically orientable particles according to the invention are based on iron. According to the invention, the magnetically orientable particles may be flattened or in the form of flakes. The amount of magnetically orientable particles in the liquid composition (before curing) is preferably between 20% and 80% by weight of said liquid composition. Very preferably, the liquid composition comprises between 30% and 70% by weight of magnetically orientable particles.
- According to the invention, the liquid composition comprises a liquid medium in which the magnetically orientable particles are in suspension. For example, the liquid composition according to the invention may be a paint, a lacquer, a varnish, an enamel or an ink. According to one particular embodiment, the liquid composition according to the invention comprises at least one component selected from acrylates, acrylics, acrylic resins, polyacrylate resins, urethanes, polyurethanes, polyamide polyols, melamine resins, polycarbonates, polyesters, polyolefins, polyamides, amino resins, epoxy resins, phenolic resins, silicone resins, PVC and PVB. Preferably, the liquid composition according to the invention comprises at least one component selected from acrylates, acrylics, acrylic resins, polyacrylate resins and melamine resins. Particularly preferably, the liquid composition according to the invention comprises at least one component selected from methacrylic resins, melamine-formaldehyde resins and epoxy resins.
- According to the invention, the liquid composition may also advantageously comprise other components such as a curing agent, one or more solvents, a plasticizer, a dispersant, a catalyst, a photoinitiator, an adhesion promoter, a UV stabilizer, non-magnetic pigments, colorants, a flow agent, a wetting agent, an antifoaming agent, etc.
- As illustrated in
FIG. 1 , the method according to the invention comprises a step (2) of selective exposure of the glass sheet comprising the layer of liquid composition to a magnetic field. - In the method of the invention, the glass sheet travels on a horizontal roller conveyor at least during the selective exposure step (2), in a direction perpendicular to the largest dimension of said rollers, the liquid composition being on the face opposite that resting on the conveyor. The roller conveyor according to the invention is a conventional roller conveyor, typically used in glass sheet production lines. It generally comprises several rollers positioned parallel to one another in the length and substantially at the same height, spaced apart by a distance that enables the glass sheet to lie at least on two rollers. Each roller may also advantageously conventionally comprise several “O-rings”, i.e. rubber seals over the circumference of the cross section of the roller, avoiding direct contact between the glass and the roller material. The rate of travel of the glass sheet on the conveyor preferably varies between 1 and 15 meters per minute. Very preferably, the rate of travel of the glass sheet on the conveyor preferably varies between 2 and 10 meters per minute.
- According to the invention, the selective exposure step (2) is carried out by means of at least one roller of the conveyor, this roller comprising at least one element made of a material having permanent magnetization incorporated into the surface thereof, also referred to as “modified roller” in the remainder of the present text.
- According to one embodiment, the modified roller is made from a cylindrical body made of non-magnetic material. For example, the cylindrical body of the roller is made of non-magnetic steel or of aluminum.
- According to the invention, the elements made of a material having permanent magnetization, also referred to as permanent magnets in the remainder of the present text, may be selected from magnets of ferrite or ceramic type, magnets of Alnico (aluminum-nickel-cobalt) type, magnets of samarium-cobalt type or else magnets of neodymium-iron-boron type.
- According to the invention, the expression “element made of a material having permanent magnetization incorporated into the surface of a roller of the conveyor” means that the element made of a material having permanent magnetization is incorporated into the cylindrical body of said roller, the outer surface thereof being located either (i) slightly below the outer surface of the roller, or (ii) substantially at the same level as the outer surface of the roller, being flush therewith without sticking out beyond it or else (iii) in the case where each roller of the conveyor (including the modified roller) comprises several O-rings, slightly below the outer surface of said O-rings or at the same level, without sticking out beyond it. The magnets may be positioned in the cylindrical body of the modified roller owing to small cavities present in this cylindrical body. Advantageously, the “depth” of the magnet in its cavity may be adapted in order to modify the distance between the magnet and the layer deposited on the glass sheet, which makes it possible to slightly modify the optical rendering of the magnetically induced pattern when the glass thickness remains constant or else to retain an identical optical rendering when thicker glass sheets are passed over the conveyor.
- According to the invention, the modified conveyor roller may comprise a single permanent magnet.
- Advantageously, in order to produce more complex patterns in the layer deposited on the glass sheet, the modified conveyor roller comprises several permanent magnets. According to this embodiment, the permanent magnets may be identical, in terms of shape, size and strength. Alternatively, the permanent magnets may be different, in terms of shape, size and/or strength. The shape and size of the permanent magnets according to the invention will respectively determine the shape and size of the pattern induced in the layer by each of these elements and therefore the appearance of the overall pattern. The strength of the permanent magnets according to the invention will determine the optical/esthetic rendering of the magnetically induced pattern. A stronger magnet will give a more pronounced pattern, with an impression of more pronounced depth, sometimes also of darker color. Still according to this embodiment, the permanent magnets may be placed at identical distances from the glass sheet and therefore from the layer or, alternatively, at different distances, by varying the “depth” of the magnets incorporated into the surface of the modified roller.
- The modified roller, comprising at least one magnet incorporated into the surface thereof, makes it possible to produce magnetic field lines in the vicinity of the sheet traveling on the conveyor. Advantageously according to the invention, the exposure to the magnetic field lines takes place very efficiently since the glass sheet, and therefore the layer, is exposed to the magnetic field for a sufficient time, even in the case of a high rate of travel of the glass sheet on the conveyor generally required by an in-line process. Indeed, this is illustrated in
FIG. 2 (cross-sectional view parallel to the direction of travel of the glass sheet), which shows a glass sheet (4) covered by a layer of liquid composition (5) after the deposition step (1) traveling (in the direction indicated by the arrow) on top of a modified roller (6) according to the invention in which four magnets (7) have been incorporated in the surface of said roller, placed around its circumference at 90° from one another. This figure shows, in (a), the approach movement of one of the magnets of the roller toward the glass sheet, already generating field lines in the vicinity of the sheet, in (b) the position of said magnet facing the glass sheet generating maximum magnetization, and in (c) the receding movement of the magnet, still generating field lines in the vicinity of the sheet. - According to the invention, the modified roller may comprise one or more “discrete” and/or “continuous” magnets.
- A “discrete” magnet is understood to mean a magnet for which all the dimensions are significantly smaller than the dimensions of the modified roller (length and circumference of its cross section). When one such discrete magnet is present on the modified roller, the pattern that it induces (as a function of its size and of its shape) is then repeated in the layer regularly in the direction of movement of the sheet, with a spacing that corresponds to the circumference of the cross section of the modified roller. If the roller comprises more than one permanent magnet aligned in the circumference of a cross section of the roller and evenly spaced out, the pattern induced is then repeated in the direction of movement of the sheet, with a spacing that corresponds to the circumference of the cross section of the modified roller divided by the number of magnets present around this circumference.
-
FIG. 3 illustrates the process of step (2) according to the invention. InFIG. 3 (a), the glass sheet (8) covered by a layer of liquid composition comprising magnetically orientable particles travels, in the direction of the arrows, on a roller conveyor (9) and approaches a modified roller (10) according to the invention comprising four permanent magnets (ii) incorporated into the surface thereof and aligned along the length thereof. After having traveled over the modified roller (FIG. 3 (b)), magnetically induced patterns (12), corresponding to the shape and the size of the magnets, are created in the layer of liquid composition in the form of lines of four patterns spaced apart by a distance corresponding to the circumference of the cross section of the roller. -
FIGS. 4 (a) to (d) schematically present examples of arrangements of magnetically induced patterns in a layer deposited on a glass sheet according to the invention owing to discrete magnets incorporated into a roller of the conveyor. - A “continuous” magnet is understood to mean a magnet that is continuous over one of the dimensions (length and circumference) of the roller, either (i) in the length of the roller, thus creating repetitive lines perpendicular to the movement of the sheet and spaced apart by a distance equal to the circumference of the roller (see
FIG. 4 (e)), or (ii) in the circumference of the cross section of the roller, thus creating a line parallel to the movement of the sheet having a thickness that varies as a function of the thickness of the continuous magnet in the circumference. Several continuous magnets, in the length and/or in the circumference (seeFIG. 4 (f)) of the modified roller, may be present. If several continuous magnets in the length and in the circumference are present on the modified roller, it is then possible to create a general pattern corresponding to a grid. - Advantageously, in order to produce more complex patterns in the layer deposited on the glass sheet, the conveyor may comprise several, identical or different, modified rollers. This embodiment is of course compatible, for each roller, with all the embodiments disclosed above that correspond to the modified roller.
- As illustrated in
FIG. 1 , the method according to the invention comprises a step (3) of curing the liquid composition. This step makes it possible to change from a wet liquid layer to a hard and dry layer. Hence it makes it possible to set the oriented particles and therefore to fix the patterns created in the layer by the selective magnetization step. The curing step according to the invention may be carried out by drying the composition (for example, evaporation of solvents) and/or by crosslinking. Crosslinking is understood to mean a step that involves chemical polymerization reactions and the formation of a three-dimensional polymer network. Curing by crosslinking according to this embodiment may be obtained by heating (typically at temperatures of the order of 100° C. to 200° C.) and/or by exposure to radiation (for example UV or infrared radiation). In the case of the use of crosslinking as a method of curing the layer of the invention, the liquid composition advantageously comprises a curing agent/catalyst. - The thickness of the layer according to the invention, once cured in
step 3, is at least 5 microns and at most 150 microns. Preferably, the thickness of the layer according to the invention, once cured instep 3, is at least 20 microns and at most 120 microns. - According to one particular embodiment, the method of the invention comprises an additional step of treating the glass sheet with an adhesion primer before the deposition (1) of the layer of liquid composition. This adhesion primer may be deposited by any manner known in the art. The adhesion primer enables a better adhesion of the layer, once cured, to the glass. Silane is a compound commonly used for such a treatment.
- Preferably, the layer according to the invention is in direct contact with the glass, that is to say that no other layer is present between the glass and the layer comprising the magnetically orientable particles. Treatment with a silane-type adhesion primer does not constitute another layer within the meaning of the present embodiment. Therefore, this embodiment is not incompatible with a silane treatment.
- According to another particular embodiment, the method of the invention comprises an additional step of cleaning the glass sheet, before the deposition of the layer of liquid composition, and at least the face intended to receive the liquid composition. This cleaning may be carried out, for example, with water or an aqueous solution containing a detergent.
- According to yet another particular embodiment, the method of the invention comprises an additional step of polishing the glass sheet with the aid of a polishing agent, before the deposition (i) of the layer of liquid composition, and at least on the face intended to receive the liquid composition. An example of a polishing agent that may be used is a powder comprising cerium oxide, CeO2.
- According to one particular embodiment, the method of the invention comprises an additional step, after the curing step (3), which corresponds to the deposition of at least one additional layer, then covering the cured layer. It may be, for example, a layer of mechanical protection, an antireflection layer, a layer for preventing finger marks, etc.
- The examples which follow illustrate the invention without the intention of limiting its coverage in any way.
- A 3.21 m×2.25 m (DLF, or production width size) sheet of clear glass having a thickness of 4 mm was placed on a roller conveyor. Along its journey on the conveyor, it first underwent polishing with a powder comprising cerium oxide in order to clean its surface. It then underwent a silane treatment.
- It was then passed under a curtain coater with a speed of around 50 meters per minute in order to deposit the liquid composition according to the invention thereon. The liquid composition applied is a paint of light gray color comprising a Glassorex clearcoat (from the company Fenzi) based on resins of the methacrylic melamine-formaldehyde and epoxy type, and comprising 50% by weight of FERRICON® 160 pigments from the company Eckart. The amount of liquid composition applied to the glass sheet is 100 g/m2.
- Next, the glass sheet was slowed down to a substantially constant speed of the order of 4 meters per minute and at that point it passed over a modified conveyor roller according to the invention. The roller, made of aluminum, was modified by incorporation in the surface thereof (the outer surface of the magnets coming to slightly below the surface of the roller) of 216 magnets, distributed along its length (54 magnets equidistant by 5 cm over one row) and along its circumference (each
time 4 magnets, at 90° from one another). The modified roller used is depicted inFIG. 5( a) and a cross section of this roller along the length is shown schematically inFIG. 5( b). Each of the magnets (13) is a neodymium-iron-boron magnet (Supermagnete S-05-25-N), of cylindrical shape, the circular cross section of which has a diameter of 5 mm and the length of which is 25 mm. Each magnet was positioned in the roller, in cavities (14), so that its length is perpendicular to the length of the roller and so that one of its circular ends is positioned toward the outside of the surface of the roller, slightly above this surface but below the outer surface of the O-rings (15) used. - The glass sheet was thus selectively exposed to a field creating, in the liquid composition, patterns of three-dimensional appearance, of darker color, that are repetitive and of circular shape.
- Finally, it passed into an oven heated at 165-170° C. for a few minutes and the liquid composition then cured/crosslinked, thus setting the patterns created in the preceding step.
Claims (11)
1. A method for producing a magnetically induced pattern in a layer deposited on a glass sheet, the method comprising:
depositing a liquid composition in the form of a layer on at least one portion of one face of the glass sheet, wherein the liquid composition comprises magnetically orientable particles;
selectively exposing the glass sheet comprising the layer of liquid composition to a magnetic field during which the glass sheet travels on a horizontal roller conveyor, in a direction perpendicular to a largest dimension of the roller, wherein the liquid composition is on a face opposite to a face resting on the conveyor; and then
curing the liquid composition;
wherein at least one roller of the conveyor comprises an element made of a material having permanent magnetization incorporated into a surface thereof, so as to produce magnetic field lines in a vicinity of the sheet traveling on the conveyor.
2. The method of claim 1 , wherein a rate of travel of the glass sheet on the conveyor at the moment of the selective exposing is from 1 to 15 meters per minute.
3. The method of claim 1 , wherein a rate of travel of the glass sheet on the conveyor at the moment of the selective exposing is from 2 to 10 meters per minute.
4. The method of claim 1 , wherein an amount of the magnetically orientable particles in the liquid composition before curing is between 20% and 80% by weight of the liquid composition.
5. The method of claim 1 , wherein an amount of the magnetically orientable particles in the liquid composition before curing is between 30% and 70% by weight of the liquid composition.
6. The method of claim 1 , wherein a thickness of the layer, after the curing, is at least 5 microns and at most 150 microns.
7. The method of claim 1 , further comprising treating the glass sheet with an adhesion primer before the deposition of the layer of liquid composition.
8. The method of claim 1 , wherein the liquid composition is deposited by curtain coating.
9. The method of claim 1 , wherein a weight of the liquid composition per unit of surface area of the glass sheet before the curing is at least 50 g/m2.
10. The method of claim 1 , wherein a weight of the liquid composition per unit of surface area of the glass sheet before the curing is from 80 g/m2 to 120 g/m2.
11. The method of claim 1 , wherein the glass sheet is a sheet of float glass of soda-lime type.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2012000482 | 2012-07-10 | ||
BEBE2012/0482 | 2012-07-10 | ||
PCT/EP2013/064356 WO2014009306A1 (en) | 2012-07-10 | 2013-07-08 | Method for producing magnetically induced patterns in a layer deposited on a glass sheet |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150217594A1 true US20150217594A1 (en) | 2015-08-06 |
Family
ID=53754122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/413,482 Abandoned US20150217594A1 (en) | 2012-07-10 | 2013-07-08 | Method for producing magnetically induced patterns in a layer deposited on a glass sheet |
Country Status (1)
Country | Link |
---|---|
US (1) | US20150217594A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4244998A (en) * | 1976-12-06 | 1981-01-13 | E M I Limited | Patterned layers including magnetizable material |
US20040001973A1 (en) * | 2002-06-28 | 2004-01-01 | Xinhao Gao | UV/EB cured integrated magnets-composition and method of fabrication |
US20080171144A1 (en) * | 2002-09-13 | 2008-07-17 | Jds Uniphase Corporation | Printed Magnetic Ink Overt Security Image |
US20100040799A1 (en) * | 2008-08-18 | 2010-02-18 | Jds Uniphase Corporation | Two-axial alignment of magnetic platelets |
US20110168088A1 (en) * | 2002-07-15 | 2011-07-14 | Jds Uniphase Corporation | Apparatus for orienting magnetic flakes |
US20120064309A1 (en) * | 2009-04-14 | 2012-03-15 | Snu R&Db Foundation | Method of generating structural color |
US20120162344A1 (en) * | 2010-12-27 | 2012-06-28 | Raksha Vladimir P | System and method for forming an image on a substrate |
US20130075676A1 (en) * | 2011-09-23 | 2013-03-28 | Ppg Industries Ohio, Inc. | Composite crystal colloidal array with photochromic member |
-
2013
- 2013-07-08 US US14/413,482 patent/US20150217594A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4244998A (en) * | 1976-12-06 | 1981-01-13 | E M I Limited | Patterned layers including magnetizable material |
US20040001973A1 (en) * | 2002-06-28 | 2004-01-01 | Xinhao Gao | UV/EB cured integrated magnets-composition and method of fabrication |
US20110168088A1 (en) * | 2002-07-15 | 2011-07-14 | Jds Uniphase Corporation | Apparatus for orienting magnetic flakes |
US20080171144A1 (en) * | 2002-09-13 | 2008-07-17 | Jds Uniphase Corporation | Printed Magnetic Ink Overt Security Image |
US20100040799A1 (en) * | 2008-08-18 | 2010-02-18 | Jds Uniphase Corporation | Two-axial alignment of magnetic platelets |
US20120064309A1 (en) * | 2009-04-14 | 2012-03-15 | Snu R&Db Foundation | Method of generating structural color |
US20120162344A1 (en) * | 2010-12-27 | 2012-06-28 | Raksha Vladimir P | System and method for forming an image on a substrate |
US20130075676A1 (en) * | 2011-09-23 | 2013-03-28 | Ppg Industries Ohio, Inc. | Composite crystal colloidal array with photochromic member |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9724727B2 (en) | Methods for printing on glass | |
US3791864A (en) | Method of ornamenting articles by means of magnetically oriented particles | |
US11590733B2 (en) | Colorful board structure and manufacturing method thereof | |
CN100582060C (en) | Ceramic tile of ultraviolet light solidified resin and its preparation method | |
CN104989046B (en) | A kind of ultra-violet curing transfer dumb light decorative panel and its manufacture method | |
CN104411507A (en) | Interior film having transverse hairline implemented therein and method for manufacturing same | |
CN106218302A (en) | A kind of color microstructures grain decorating panel with stealthy form and preparation method thereof | |
JP2015529613A (en) | Method for forming a magnetically induced pattern in a layer deposited on a glass sheet | |
CN102584029A (en) | Tempered glass decorating plate manufactured through digital painting and manufacture method thereof | |
CN104989045A (en) | Ultraviolet curing transfer-printing high-gloss decoration plate and manufacturing method thereof | |
KR101559793B1 (en) | A film applied to the external surface of home appliances and manufacturing method thereof | |
US20150217594A1 (en) | Method for producing magnetically induced patterns in a layer deposited on a glass sheet | |
CN103602949A (en) | Multicolor vacuum coating and processing technology thereof | |
CN105398253A (en) | Anti-counterfeiting material and preparation method thereof | |
CN102490448A (en) | Magnetic printing mother set, preparation method thereof and preparation equipment | |
CN100377892C (en) | Processing method for digital ink jet printing | |
WO2015071125A1 (en) | Method for producing magnetically-induced patterns in a layer deposited on a glass sheet | |
US20140154484A1 (en) | Designable medium manufacturing method and designable medium | |
CN104989048A (en) | Ultraviolet curing transfer-printing flat decoration plate and manufacturing method thereof | |
KR101459359B1 (en) | Method for manufacturing direct-transcription colored steel sheet plate | |
CN104989047B (en) | A kind of ultraviolet curing chromatic dumb light decorative panel and its manufacture method | |
CN104989060B (en) | A kind of ultra-violet curing transfer 3D decorative panels and its manufacture method | |
JP4524240B2 (en) | Multi-colored glass container and manufacturing method thereof | |
CN104989062B (en) | A kind of ultraviolet curing chromatic 3D decorative panels and its manufacture method | |
CN104260179A (en) | Board processing technology |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AGC GLASS EUROPE, BELGIUM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PIETERS, RONNY;LEMAL, DOMINIQUE;SIGNING DATES FROM 20150105 TO 20150131;REEL/FRAME:036772/0266 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |